You can also use curl to upload your code. That's the smartest hackery I have seen. Idea by James Halliday. You can just do:

curl -sNT file.js heatwave.nodejitsu.com

And that will upload the code to the heatwave server and respond with info on how to see it. Like this:

$ curl -sNT foo.js heatwave.nodejitsu.com
Visit this site to run and manage the code:
http://heatwave.nodejitsu.com/id/09306fa0
To upload more files:
curl -sNT file.js heatwave.nodejitsu.com/id/09306fa0/file.js

And with curl you can even upload multiple files to the same page, which is super neat.

We had really great team work. Josh, James and David hacked from Joyent and we communicated over IRC, just like the last year. Each of us had a separate github repo and we'd just pull from each other every now and then. That's about it.